Belt-making apparatus



Jan'I31, 1933 B. A. EVANS ET AL BELT MAKING APPARATUS Filed Jan. 8, 1930%N ISM .hanging Patented Jan. 31, 1933 0F NEW` YORK v BELT-MAKINGAPPARATUS PATeNr ,yor-Fieri f l BENJAMIN A.' E vANs AND WALTER B,FREEMAN, or CYAHOGAFAIQLS, omo, As-A sIeNons 'ro THE Brr. GoonmorrCOMPANY, or NEW YoRx, N, Y., A, oonroRA'rIoN Applictionmed Jaaary 8,1930.' serial No. hasta.. 'f

This invention relates to beltmaking apparatus, and more especially toapparatus for the manufacture of endless transmission belts ofrelatively long length.

The chief objects ofithe invention are to provideimproved apparatus formaking endless beltsof long length; to provide convenientl for themanufacture of belts of various lengths and to provide accuracy in thedimensions ofthe completed belts. v

lOf the accompanying drawing: n Y

Fig.' 1 is a side elevation of our improved belt making apparatus, inits preferred form, at the initial stageofoperation. f l Y Fig-2 is asection on line 2-2`lof Fig. 1.

4 Fig. 3 is a plan view of the apparatus at the nal stage of operation(Y F ig. 4 is a sectional perspective view of'al belt havinga bodyportion such asis constructed' upon my improvedapparatus. Y

lReferring to the drawing, 10 is an endless pattern belt mounted` uponfapair of pnl- 'leys 11, 12, of whichtheilatter only is driven, saidpulleys preferably havingend flanges as shown to hold the belt 10 in atrue course. Transinissionbelts are constructed by applying a pluralityof plies of rubberized fabric to the Vouterfaceof the patternvbelt 10 asthe latter is driven, and thereafter longitudinally severing therelatively wide belt thus Aformedinto. a plurality of relatively narrowbelts, "and the outer face of vthe pattern belt preferably vis providedVwith a,V

cushion 10a of rubber or other suitable material to protect it from the.cutter asxthe work'is severed thereupon.- The pulley 11 has asubstantial range of movement toward and away from4 the pulley 12, topermit the use of pattern belts of Adifferent lengths in the manufactureof transmission belts of various sizes.

`The pulley` 12 isrmountedupon an overdrive-'shaft 13 which isjournaledf at one `end in a stationary frameor bracket 14, andsaid shaftAisprovidedwith a sprocket 15 connected by a sprocket chain 16 withsuitable driving means (notfshown). rl `he pulley 11 is journaled uponan overhanglng shaft 1,7which is mounted upon a wheeled carriage 18,"thewheelsfw`19 o fwhich are Athe work from said belt.`

flanged and ride *upon a pair of rails' 20, 202 4 Extendingdownwardlyfro'm theunder side I y i i of the floor of the carriage 18are transversely spaced ears' 21, 21, and threaded through Y areswiveled -in individualrbrackets 23, 23

and provided respectively with apertured heads 24, 24 by which they aremanually ro,-

t-ated withthe aid of a suitable tool.A

The brackets 23 are SGCUIB O'IeSpect'iveV platesfor supports 25,25byfbolts 26, 26,V and I Y said plates are secured to the floor between:

and parallel to the rails 20, andare provided 27, V27 to receivesaid'bolts 26'. 'lhusthepo` atl spaced 'intervals with threaded'recesses` Ston of the brackets 23 onf'thg plagtsl:25gl may be altered toprovide major'adjustment v ofthe pulley 11 with relation tothejpulley'12,"` and the finer adjustments made thereafter with'the screws 2 2.`The provision of.v

two adjustment screws makes it possible to align theV shaft 17accurately in Vparallelism `with `the` shaft 13, and to compensatey forany play between the wheelsf19 and` track 20, or any deflection of theoverhanging 'supports a cutting-gauge or knife-guide 29 which isprovidedwith a series of accurately4 spaced slots 30,- `30 forthereception ofa i knife The knife-,guide 2,9is 'secured to the bracket28l by bolts -32, 32 which Aextend 'through slots 33, 33 intheknife-guide," The respective bolts are provided with handles or leversby .which they are manually turned The arrangement is such that thelrnife-guidet1nay be'easily and Vquickly posltionedin operative positionadjacentlthe pattern belt 10 and drum 11,v "or retracted f therefrom topermit lthe easy y. removal offv If the pattern belt employed is ofshort length, no intermediate support forzitsup yper and lower`reachesis necessary. If said belt is oflong lengthwefprovideasu'p'port-f- 'i ing structure, or frame 34 adapted to rest yupon therails 20, andprovided with a 'lower platform 35 I positioned f below:the lower" `reach ofthe bel-t 10 and 'an upper, overhang`- V said earsare respectivescrews 22, 22`iwlii`ch i ing platform 36 positioned below.the upper Y reach of said belt, said upper platform being *supportedfrom one side only by.l anglebrackets 37, 37 Said'platforms 35,36comprise open frames in vs fhich are journaled horizontal 'rollers' 38,38 upon which the patterny belt mayri'dein passing between the pulleys11, 12. Verticalguide rollers l39, Y l 40 lare inoun'tedA upontheres'pective plat-Y 10 fornis'a, 36'andengage a margin of the belt 10to assist inholding the latter in a true COllIStLv l The work comprisesabelt made up of a y I plurality of superposedfconvolutionsof fabrictreated with Vunvulcanized.rf1 ibber, said convoluti'ons eXtendingllengthwise lofthe workgjy Thek belt may comprise .more than one kind offabricl o 'rarrangement thereof 'makingapparatus'lheftu'rret'47jisfprovid-` since" the structure ofthe work forms noVpartY of thi-sjinventi'on. The work shown comprises two kinds vorgradesof'body fabric .41, 42, Fig. 4, which fabric, wound with linerin rolls43, 44, is mounted in respective Vbrackets 45,46 Vonafturret 47positioned adjacent the work-receiving end ofthe beltedfwi'tha"vfoot-"treadleI48 yby which it is indeXedl to present, alternatively,therespective rolls. 43, 44v in, delivery` relation to' the beltmakingapparatus.v The bracketsf45, Y 46 also support rotatable liner-rewinding@114459,50 for -rewinding the liners of the slidablymounted forverticalmovement in a therefrom., Y

, For compactingtherespective plies ofthe rolls 43, 44 as thefabric'41,42 is withdrawn work as it is applied@ 'thepaaembelt 10,

we provide a. presser roller lposit'ion'ed parallel tothe pulley 12andabove the same andthe pattern belt thereon.y The presser roll 51is`journaled Y in AvaV yoke 52 which is y guide structure 53,said yokebeing secured 4to lthe outer end-f of thepi'ston 'rod 54 o'f'a Vfluidpressure cylinder' 55.

In 'the operation of fthe Aapparatus, `a pattern belt 10 of properlength being Vmourited upon thepulley-s 11, :12and drawn taut, the v .louter surfacesV of'saidbelt is treated with a l coat of suitableadhesive to cause the work ,.teniporarilyto adhere thereto. The leadingv end kof fthefabric strip 41 is then applied to fthepattern-belt,:thepresser roller 51 ,low-

- ered thereupon, and the lpattern belt'set in motion in the directionof 'the arrows, Fig. V1,

bylneans of the'driving pulley-12. As'soon Vas -aj sufficient numben of.plies4 of theV fabric 41 are onthebelt, its movement isV arrested,

v the fabric strip41 is severed', and the fabric Y Vstrip42 fed onto thebelt inthesame manner as the Vfirst strip, luntilv the Vrequired numberA of plies .are .built upto provide the belt-struc- .ture 56'shown inFig. 3.

,-Afterthe .movement of the v stopped andthe fabric strip 42 severedfroml the rollof fabric 44, the alignment of the Pullejvll ischecked,and corrected by means of the screws22 if necessary, to `assureaccurately; the parallelism of the pulleys'11, 12V

so that the margins of the work 56 are of equal length. Then the belt 10,again is set in motion andthe knife 31 is fed successively'throughtheslots 30 in the knife-guide 29 to sever the beltlstructure56,-nlongitudinally, v. into a plurality of relatively .narrow belts5,7,

-5'7 yof uniform'wid'th Vand length, theiknifeguide 29 being sopositioned with yrelation to the belt'lO that the knife `31 penetratesthe belt structure 56 and enters the cushion 10a of the pattern belt 10'without penetrating Y said cushion to damage saidpattern belt.f1`he sor' belts 57 are then rremoved Afrom the pattern belt 1.0 and maybe'vulcan-ized and used as raw-edge driving belts if desired, or theymay be provided on one side with a cushion of 'rub-k ber 58, and with afabric wrapper or' cover 5 9, as shown :in .Fig.Y 4,.and vulcanized to Yshapein av mold. Y

Y The apparatus is readily adaptableto the' manufacture Aof belts ofvarious lengths, and

the belts produced possess un'iformityandiac-` curacy oflength.

scope 'of the `appended. claims;

We'claimzf Y f l 1 l1. Beltf making'` apparatus` comprising a patternbelt adapted .to vreceive beltfbuilding material fed thereonto in thedirection 'ofits movement, selectiver material supply. means inalignment therewith, meansffor' driving Y said pattern belt,-mean s forlaterally guiding Our invention maybe the .i

said pattern belt,v and means for coinpafc'ting s 2. Belt-making,apparatusy comprising a pattern belt adaptedto receivea strip ofbeltvbuilding material fedv thereonto in the direc-Y lgtion-of Yitsmovement, material supplyfmeans in alignment therewith, means forpressing the material afs it isapplied to thebelt, means 'i for drivingsaid p attern'belt,means forlater allyguiding saidpatternbelt and acutting device adapted to sever fan Vendless band of of endless belts. iv

, g 3. Belt-making apparatus vcomprising a .pattern belt adapted toreceive astrip of belt- Y building material and to'windthe same about IV' its outerfsurface ina'plurality of superposed "convolutions, means.for compacting-the con-v `volutions as they'are applied Va protective.V1.203

cushionon the outer surface of said pattern claim 3 including' meansfor.; limiting e'X- tent ofthe movement of therutting'member y thesuccessiveplies of material yfed thereont'o i material kon said-patternbelt into a pluralityV to a point within the protective cushion of thepattern belt.

5. Belt-making apparatus comprising a pattern belt vadapted to receive astrip of beltbuilding material and to Wind the same onto v its outersurface in a pluralit of superposed convolutlons, a pair of pul eyssupporting said pattern belt, one of said pulleys bein adv justable withrelation to the other pu ley, means for driving said other pulley, and apresser roller cooperating With the drivepulley and pattern belt forcompacting the successive convolutions of material as they are drawnonto said pattern belt.

6. Belt-making apparatus as defined in i WALTER B. FREEMAN.`

